

#define XFSingleH(name) +(instancetype)share##name;

#if __has_feature(objc_arc) //ARC
#define XFSingleM(name) static id _instance;\
+ (instancetype)allocWithZone:(struct _NSZone *)zone {\
static dispatch_once_t onceToken;\
dispatch_once(&onceToken, ^{\
_instance = [super allocWithZone:zone];\
});\
\
return _instance;\
}\
\
+ (instancetype)share##name {\
return [[self alloc] init];\
}\
\
- (id)copyWithZone:(NSZone *)zone {\
return _instance;\
}\
\
- (id)mutableCopyWithZone:(NSZone *)zone {\
return _instance;\
}\

#else                      // MRC
#define XFSingleM(name) static id _instance;\
+ (instancetype)allocWithZone:(struct _NSZone *)zone {\
static dispatch_once_t onceToken;\
dispatch_once(&onceToken, ^{\
_instance = [super allocWithZone:zone];\
});\
\
return _instance;\
}\
\
+ (instancetype)share##name {\
return [[self alloc] init];\
}\
\
- (id)copyWithZone:(NSZone *)zone {\
return _instance;\
}\
\
- (id)mutableCopyWithZone:(NSZone *)zone {\
return _instance;\
}\
- (oneway void)release {\
\
}\
- (instancetype)retain {\
    return _instance;\
}\
- (NSUInteger)retainCount {\
    return MAXFLOAT;\
}
#endif





